Liquid crystal display device

Abstract

A liquid crystal display device includes a liquid crystal cell, a light source, a light guide plate, a first flexible printed cable and a second flexible printed cable. The light source emits light. The light guide plate guides the light to illuminate the liquid crystal cell. The first flexible printed cable is electrically coupled to the liquid crystal cell. The second flexible printed cable is electrically coupled between the light source and the first flexible printed cable. The second flexible printed cable has a printed circuit, a first insulating film formed on one side of the printed circuit and a second insulating film formed on the other side of the printed circuit. The printed circuit is partially exposed on the one side of the printed circuit to form a first land that is electrically coupled to the light source and a second land that is electrically coupled to the first flexible printed cable.

1. A liquid crystal display device comprising:
 a liquid crystal cell; 
 a light source configured to emit light; 
 a light guide plate configured to guide the light to illuminate the liquid crystal cell; 
 a frame housing the liquid crystal cell, the light source and the light guide plate, the frame having a base plate with a groove portion; 
 a reflective sheet configured to reflect the light forward of the frame, the reflective sheet being disposed between the base plate of the frame and the light guide plate, the reflective sheet being directly disposed on a first bottom face of the base plate; 
 a first flexible printed cable electrically coupled to the liquid crystal cell; and 
 a second flexible printed cable electrically coupled between the light source and the first flexible printed cable, the second flexible printed cable having a printed circuit, a first insulating film formed on one side of the printed circuit and a second insulating film formed on the other side of the printed circuit, with the printed circuit being partially exposed on the one side of the printed circuit to form a first land that is electrically coupled to the light source and a second land that is electrically coupled to the first flexible printed cable, 
 the second flexible printed cable including a main portion on which the first land is formed and an extension portion on which the second land is formed, the extension portion extending from the main portion, the main portion being fitted in the groove portion and directly disposed on a second bottom face of the groove portion, the second bottom face of the groove portion being located rearward of the frame with respect to the first bottom face of the base plate. 
 
     
     
       2. The liquid crystal display device according to  claim 1 , wherein
 the first insulating film is partially removed to expose the first and second lands. 
 
     
     
       3. The liquid crystal display device according to  claim 2 , wherein
 the first flexible printed cable is electrically coupled between the liquid crystal cell and a drive circuit that is configured to drive the liquid crystal cell and the light source, 
 the light source is configured to be driven by the drive circuit via the second flexible printed cable. 
 
     
     
       4. The liquid crystal display device according to  claim 3 , wherein
 the second land is formed at an end of the extension portion. 
 
     
     
       5. The liquid crystal display device according to  claim 4 , further comprising
 a bezel removably attached to the frame to hold the liquid crystal cell from a front side of the liquid crystal cell. 
 
     
     
       6. The liquid crystal display device according to  claim 5 , wherein
 the frame have an access portion formed in a lower plate of the frame, and 
 the extension portion of the second flexible printed cable extends through the access portion. 
 
     
     
       7. The liquid crystal display device according to  claim 5 , wherein
 the frame includes an engagement recess formed in an inner peripheral face of the frame, and 
 the light guide plate includes a hook portion protruding from an outer peripheral portion of the light guide plate and engaging the engagement recess of the frame. 
 
     
     
       8. The liquid crystal display device according to  claim 1 , wherein
 the light guide plate includes a fitting hole portion, and 
 the light source is fitted into the fitting hole portion. 
 
     
     
       9. The liquid crystal display device according to  claim 1 , wherein
 the reflective sheet has a fitting hole through which the light source is disposed. 
 
     
     
       10. A liquid crystal display device comprising:
 electric component means for displaying an image; 
 light emitting means for emitting light; 
 light guide means for guiding the light to illuminate the electric component means; 
 frame means for housing the electric component means, the light emitting means and the light guide means, the frame means having support means with groove means; 
 light reflection means for reflecting the light forward of the frame means, the light reflection means being supported between the support means and the light guide means, the light reflection means being directly supported by a first support face of the support means; 
 first electric connection means for electrically coupling to the electric component means; and 
 second electric connection means for electrically coupling between the light emitting means and the first electric connection means, the second electric connection means having first electric coupling means being coupled to the light emitting means and second electric coupling means being coupled to the first electric connection means, the first electric coupling means and the second electric coupling means being formed on the same side of the second electric connection means, the second electric connection means including a main connection means on which the first electric coupling means is formed and an extension connection means on which the second electric coupling means is formed, the extension connection means extending from the main connection means, the main connection means being fitted in the groove means and directly supported by a second support face of the groove means, the second support face of the groove means being located rearward of the frame means with respect to the first support face of the support means.